中国科学院数学与系统科学研究院期刊网
AMS
A Sufficient Degree Condition for a Graph to Contain All Trees of Size k
Camino BALBUENA, Alberto MÁRQUEZ, José Ramón PORTILLO
Acta Mathematica Sinica . 2011, (1): 135 -140 .  DOI: 10.1007/s10114-011-9617-6